/*
 * Copyright 2009 Jiwei Xu (http://www.xujiwei.com)
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */

provide("Undo.MoveCommand");

require("Undo.UndoCommandBase");

MoveCommand = Class(UndoCommandBase, {
    Move : function(delta) {
        var obj = this.Object;
        if (this.Data.IsMovedHandle) {
            obj.MoveHandle(this.Data.HandleIndex, delta);
        } else {
            for (var i = 0; i < obj.length; ++i) {
                obj[i].Move(delta);
            }
        }
    },

    Undo : function() {
        var delta = {
            X : -this.Data.Offset.X,
            Y : -this.Data.Offset.Y
        };
        this.Move(delta);
    },

    Redo : function() {
        this.Move(this.Data.Offset);
    }
});